Printing-machine.



W. SCOTT, DECD.

1. L D. J. sGoTT, BXEGUTQRS.

PRINTING Mmmm.

APPLICATION FILED JULY 1]., 1905,. l Batente Sept. E3, 1910.

UNITED STATES PATENT OFFICE.;

WALTR SCOTT, OF PLAINFIELD, NEW JERSEY; ISABELLA SCOTT AND 'DAVID JOHN SCOTT EXECUTORS SAID WALTER SCOTT, DECEASED.

PRINTING-MACHINE.

T o all whom it may concern: l

Be it known that I, WALTER SCOTT, a citizen of the, United States of America, and a. resident of Plainfield, Union county, New Jersey, have invented certain new and useful Improvements in Printing-Machines, of which the following is a specification.

The present invention relates generally to printing mach1nes,-and has more particui larlyreference to tripping mechanism used i in connection therewith.

other machines, it is customary to trip the impression automatically once to each cycle.

of the machine. This'may be accomplished by moving the form carrying member out of contact with the impression member, but preferably, and as shown herein, it is accomplished by moving the impression cylinder out ofrcontact with the form carrying member. Means are further provided for inter-v ruptingr the operation' of the automatic means so as to maintain the parts tripped. Then this takes place and the supplyof ink is not being used, the ink accumulates on 'the distributing rolls or other distributing surface, and on the form.

To overcome this objectionable condition is the objectv of the present invention.

One feat-nrc of the invention consists in `interruptingr the operation of thc fountain roll when the interrupting` means for the automatic tripping means are operated.

Preferably, and as herein disclosed, this effected by placingr inl: tripping means under the control of the automatlc ,tripping- 'incanslin a manner similar to that shown in application Serial No. 368,023 tiled July. 3,

lhen inking up the form before printing commences, itis desirable to maintain the impressionv tripped without stopping' the supply of ink.

Another feature of ythel invention therefore resides in providing means whereby the impression can be maintained tripped without stopping the operation of the fountain .embodiedin a suitable form, but it is obvious that changes in construction may be Specification of Letters Patent. 'Patented pt, 13, 1910,

Application tiled July 11, 1905.

Serial No. 269.160.

made without departing from the spirit o f theinven't-ion.

In the said drawings: Figure 1 is a side elevation of a two revolution printing machine showing the invention applied to this structure. Fig. 2 is a fie-iew, looking in the direction of the arrow 2 in Fig. 1 showing certain details and partly-iiijsection. Fig. 8 is a plan detail view of the fountain roll and adjacent elements.'4 Fig. 11 is a plan detail View of the means for rendering the ink In printing machines, whether rotary or flat bed, such as two or three revolution or tripping mechanism inoperative.

Similar characters of reference indicate corresponding parts in the die-rent views.

1 indicates a framework of any, suitable construction for properly supporting the parts comprising the machine.

2 indicates the impression cylinder'carried by the journal 3. This journal 3 is mounted in the sliding frames or standards 4, one at. each side of the machine, but only one of which is seen.

The form carryingl means in they present instance consist of the reciprocating bed 5 on which is mounted the plate or type or other means constituting the form4 G.

i' and 8 indicatev two groups of distributing rolls such as are usuallyemployed in machines of this character forming a distributing surface, and adjacent to the group of distributing rolls is a fountain 9 in which is' located the f 'mntain roll 10. This fountain roli may be of any usual or suitable construction, and may either rotate continuously or intermittently, ormay be operated linl any other way found useful. In the present instance, however, it is given an intermittent progressive motion in one direction only by the following means. lifo'unted on the fountain roll shaft 11 is a vratchet 12 with which enga'ges the pawl .123 carried by the segment 14 which is provided with a number of teeth as 15 adapted to he engaged by the sector 1G pivoted on the framework at 17. This sector 16l is'operaten same.

to each complete reciprocation ofthe bed, and as it rotates, the lever 21 is osclllated thereby ino'vingtlie connection 25 back and, forth, thus rocking the sector 16 and inipartin the proper motion to the fountain roll.l n each return strokel of the bed, the impression cylinder is moved up and out of the vway of the form,' wh1le on the forward movement of the bed the impression cylin der-is-moved down so as to be in ontact with` the said form as it passes under the AThe ink' is transferred as is customary from"the fountain roll to the distributing rolls or to the ink distributingtable 75 on the reciprocating bed or to any other distributingqsurface desired by means of the ductorroll 1126 which is operated 1n' the l insha-l manner from va cam as 27 conveniently mounted on the shaft 19 throughthe instrumentalit'yof the levers 28 and 29.

suitable means may be utilized to vtrip and? untrip the' impression automati-A cally once vto each cycle'A of the machine. I n the` present instance, however, there 1s mounted on the standards '4 a shaft 30 connected by'means of the toggle links 31 to a fixed..,bracket 32 on the" framework. This shaft '30,is oscillated vby means of the cam 33 conveniently'mountedvon the shaft 19 through the instrumentalityof the rocker 34 pi'v0ted lat '85 and having .friction rollv engagrng ,with the said ncam 'This rr'ock'er 34 further carries anotherl friction roll 37'adapt`ed to engagefin'the notch-38 of the lever or member 39 Whose other end is connected by means of the link 40 tothe, shaft 30"; As thecam 33 rotates the rocker' 34 will ypush thelever' 39 back and forth, thereby\voscil'lating .the shaft 30 and raising andloweri-ng' the impression cylinder at the propei'fperiodstl Suitable means as a spring 41--is usedtobalance the weight of the cylinder. W l ,V y

f"l`he means for interrupting the operation ofthe automatic means soas to maintain the parts tripped. are preferably constructed as folloWsiMounted on the stud 42 vis a rock and fs"liding'cam 43l which is adapted to lift the lever 39 when it is desired to maintain' the impression tripped. -In order to 'properly effect this, there is mounted on the jectibn-44. VVlien this cam surfacef45,/h "ever-, is`in the4 plane of 44, the pin 46 o cam 33 or elsewhere, a projection A44-yvhich in 43,' Aspeviously,.statemithis cam h oscillatesand., slides and is provided in or 'other 'rnemlo'er46y upon Awhich J verBQ-,rests rIfhis pin A' uis of such ,length A that 1 jwill/always in #with ftheitve' aar Brit ,wilma i?, desiredito" trip thee "lin/der, the cam ily/is' movedsijdewse Vso ast' `ring the y/carnfsurface out "ofthe plane Vof the passing,,finiti-ffk transmit its: motion L.to the said connection :25, whereby the-:fountain rollis kept in a state .of rest. In that way no ink is transraise the lever 39 up so asto bring the roll 37 out of ythe notch 38 as show/nain the drawing, whereby when the cam 33 moves the rocker 34, said roll 37 will move loosely in the slot 47 of the lever 39 without operatf ing the latter. i Bythis means the cylinder remains in its elevated position. f

The means for controlling the action Iof the cam 43 as shown in the present instance are those commonly em loyed inthe 4art and 75 consist preferably of a oot treadle 48 adapted to act against the counterweight 49 wh'entr' depressed, andl through the connection 50l pivoted on the stud 51 the cam143is moved" sidewise so as to bring its surface 45 into 50 and out of engagementwith the projection4 44. Preferablyjthe parts are so arranged@ that the foot treadle canybe depressed-ntf: any time during the operation of the ima-,1 chine so that at the proper moment .said

used Ato niove the cam sidewise a spring 5 3; which presses against a collar 54A mounted moved Sidewiseinw the pianeti alessia projection 44 soV thati when the lattery comes' around, on the succeeding revolution it will y y100 encounter the c'a'm surface 45 and tilt the cain`43. *The foot treadle 48 is provided with a pin 56 which passesinto the slot 57 'ofthe sleeve 58 when the saidl foot treadle is l depressed and b turning the said `treadl`e around the 'sai' vvpin 56 will enter thefs-mallv retained in `the vtrippedeposition" 60in which is'-located 'theproj'ection' 6l normally extending` intotthe plane of the end 62.y This projection provided with a? pin 63 traveling `in the slot 64 and when Withdrawn by meansv of the handle 65"and the pin is turned' into the slot 66, the .Salidpro-E jection will be moved 'within the said bush.-

ing so as notto contact with theend of the connection 25. Obviously, when. the saidv proj ecti'on. protrudes lintogthe planeeof ythe connection 25 and the lever 39 is raised by roll-23wfrom'the notch 24 so that asf'the lever `21,swir'igsaback and forth' it not ferred from the fountain roll to the distribi utingrolls while-fthegmechanism. istripped..Avv f will/ therefore be' understood. from the/.T130

cam will be shifted sidewlse into the path of the projection 44. This is preferably' ef fected by mounting on the pin 52`which is `on fthe said spindle 52 soothat when this spring is compressed by the action. ofthe f horizontal slot'59 wherebyitliepartswill ,be

1'10 of the connection 25 by reason of the spring the' action of the cam 43V,v it willlift thesaid connection 25 up, thereby disengaging the foregoing that the impression cylinder is' moved periodically and automatically ont of.c'or1ta(:t with the form and in addition to that it may be tripped so as to remain ont of contact with the said form, thereby also ,tripping the connection Which drives the fountain roll so that no undue accnn'iniatioii of ink takes place on the distributing rolls and form. It is necessary, however, at times to operate the inking mechanism While the cylinder is tripped. This is especially true before the press started and when it is desired to ink up the distributing rolls and the' form before orinting commences. For this reason it will be miderstood that when the projection (51 is Withdrawn from under the connection 25, the ink tripping 1nechanism Will be inoperative nera-use when the lever 39 is raised up it will not lijt't the connection 25 ont ot operative engagen'ient with the roll 23. in this Way the cylinder van he `tripped While the inking mechanism remains operative.

Ot' course it Will be understood that this device can be applied to any kind' ot a press Whether rotary or bed and cylinder in which the trippin' mechanism is usedior the impression cyinder. (it course it will also be understood that the Words tripping 'the impression cylinder should be construed .to include the lequivalent of moving the form carrying means instead of the 'impression cylinder, as is done in some constructions. J

What is claimed is:

1. In a printii'ig ni chine, the combination of an impression cylinder, form carrying means, a fountain and fountain roll, a ductor roll and a distributing surface. automatic means for tripping' and untrippingy the impression once to each cycle .of the inachine,a connection for operating the "fountain roll. means tor operatingr the said conv ncction., means for .interrupting the opera tion yci' the automatic means so as to mains tain the impression tripped and for simultaneously therewith lifting' theconnection out ot' engagement with its operating means.

2. In a printing machine, the combinan tion of an impression cylinder, form carrying means, a fountain and fountain roll, a

x ductor roll and a distributing surface, anfomatic means for tripping and untripping the impression once to eachA cycle of the machine, a connectionfor operating the fountain roll, in mns `for operating the said connection, means for interrnpting,v the operation oi the antomatic means so as to maintain the impression tripped. and for simulmeans, a fountain and fountain roli, a doctor roll and distributing surface, a connection for operating,F the fountain roll, means .for operating the. said connection, a member adapted to automatically trip and nntrip the impression oncev tog each cycie of the Inachine, a projection xiii said member normally protruding in the plane of the said connec tion, and means for lifting the member aforesaid thereby interrupting its normal operation and maintaining the impression tripped, thereby also lifting the connection out of operative engrgement with its operating means by the p ijectiorn l 4. ln a printing machine, the combination of an' impression cylinder, form carrying means, a fountain and fountain roll, a dnc- ,tor roll and distributin surface, a connec- L)tion for operating the onntain roll, means for operating the said connection, a member y adapted to automatically trip and nntrip the impression once to each cycle of the machine, a projection on said member normally protrudingr in the'plane of the said connection` and means for lifting the member aforesaid thereby interrupting its normal operation and maintaining the impression tripped, thereby also/lifting the connection out oi operative engagement with .its ogcratinp,` means bythe projection, and means for With-` drawing thesaid projection so that the member can be lifted to maintain the impression tripped without lifting the connec` tion out or" engagement with its operating means. j

Signed at New York this 30th day of dune 'OJ).

WALTER SCUiT. Witnesses: f

A. F. GnYnn, Am V. Bremen. 

